/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Keychain Services Integration Extension for Mozilla.
 *
 * The Initial Developer of the Original Code is
 * Julian Fitzell <jfitzell@gmail.com>.
 * Portions created by the Initial Developer are Copyright (C) 2009-13
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */
Components.utils.import('resource://gre/modules/ctypes.jsm');

const EXPORTED_SYMBOLS = ['Framework'];

function Framework(name) {
	if (! name)
		throw Error('Framework must be initialized with a name');
		
	this._path = '/System/Library/Frameworks/' + name + '.framework/' + name;
};

Framework.prototype = {
	_library: null,
	_path: null,
	_functions: {},
	
	get library() {
		if (this._library !== null)
			return this._library;
		else if (this._path === null)
			throw Error('No _path defined for Framework');
		else
			return this._library = ctypes.open(this._path);
	},

	declare: function(name, abi) {
		var declareArgs = arguments;
		this.__defineGetter__(name,
			function() {
				if (this._functions[name] !== undefined)
					return this._functions[name];
				else
					return this._functions[name] = this.library.declare.apply(this.library, declareArgs);
			});
	},

	close: function () {
		if (this._library !== null) {
			this._library.close();
			this._library = null;
			this._functions = {};
		}
	},
};
